. >> 6-year-old conner johnson started a petition on the white house website after he found out about funding caughts to the -- cuts to the space program. if too many are made his dream of becoming an astronaut could be crushed. >> well, i would be very sad. nasa's mostly the only space station -- space company i've known for a very long time. >> the petition already has more than 8,000 signatures. 100,000 signatures are needed to get a response from the white house. >>> 4:56 right now. the search for six family members missing in northern nevada grows more desperate by the minute. the challenges facing rescuers and their families. >> and today, the world says good-bye to nelson mandela. and even through the rain south africans are singing and celebrating his life. we'll take you live to his memorial service. ,,,,,,,,,,,,,,,,,,,, griego. >>> the biggest event that south africa will ever see. >> today the world celebrates the life of nelson mandela. world leaders joined 90,000 joyous south africans in the ring to honor mandela's legacy. >> layers upon layers upon layers. without layers